| 摘要 |
<p>A middleware approach to implementation of real-time Ethernet that provides deterministic, i.e. predictable, communication services over the conventional Ethernet network is described. The invention resides above the network interface device and the device driver, yet below the system transport services and/or user applications. The middleware schedules and controls admission of data packets onto the network and guarantees the real-time constraints of the data packets once they are admitted. The invention prohibits collision of data streams during transmission of real-time data, yet may allow collisions during transmission of soft- or non-real-time data for improved utilization of bandwidth. The invention may further optimize bandwidth utilization by incorporating a quality of service definition into the scheduling determination.</p> |
